Jet aircraft



FIG. 1 is a perspective view of a jet aircraft showing my new design;

FIG. 2 is a side elevation view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a perspective view of an aircraft embodying a variation of thenew design shown in FIG. 1;

FIG. 6 is a side elevation view thereof;

FIG. 7 is a top plan view thereof; and

FIG. 8 is a front elevation view thereof.

FIGS. 1, 3 and 5 illustrate the aircraft in flight with the landing gearretracted.

The ornamental design for a jet aircraft, as shown and described.